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<script>
    //n代表第几位数
    function fbnq(n) {
        if (n == 1 || n == 2) {
            return 1

        } else {
            return fbnq(n - 2) + fbnq(n - 1)
        }

    }
    console.log(fbnq(5))
    console.log(fbnq(6))
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